Improved printing-press



UNITED STATES PATENT OEEICE.

ERVIN B. TRIPP, OF OONCORE, NEV HAMPSHIRE.

IMPROVED PRINTING-PRESS.

Specification forming part of Letters Patent No. 11,765, dated October 3, 1854.

To all whom, it may concern,.-

Be it known that l, ERVIN B. TRIPP, of Concord, in the county of Merrilnac and State of New Hampshire, have invented a new and Improved Printing-Press; and I do hereby declare that the following is a full, clear, and exact description ot' the same, reference being had tothe annexed drawings, making a part of this specification, in which- Figure 1 is a side elevation of my improved press, the side of the frame nearest the eye being' removed. Fig. 2 is a plan or top view of the same.

Similar letters of reference indicate corresponding parts in the two figures.

This invention relates to a new and improved printing-press; and it consists, first, in the peculiar means employed for feeding the sheets to the form to be printed and removing them therefrom after being printed, and, second, in an improved device for inking the form, which will be fully described hereinafter.

To enable others skilled in the art to fully understand and construct my invention, I will proceed to describe it.

A is a frame of rectangular form, on the upper part of which a transverse bed-plate B is secured in any proper manner.

C, Fig. l, is a platen directly underneath the bed-plate B. The platen works between ways d at the sides of the frame A. One way is shown by dotted lines in Fig. l.

D is a toggle, the lower lever or arm b of which is stepped in a cross-piece c at the bottom of the frame A, and the upper arm CZ is attached to the under surface of the platen C.

E is a connecting-rod, one end of which is attached to the lower arm or lever b of the toggle D and the opposite end to an eccentric F, which is on a transverse shaft F at the lower part of the frame.

G is a tympan, which runs on ways e e on the upper side pieces ff of the frame A.

H is a cam on the shaft F, in the groove of which the end of a lever g fits, said lever g being attached to a shaft I, to which are connected bent levers 7L h, one at each end of the shaft. One of these levers is clearly shown in Fig. l. At the ends of these bent levers h 7L are rods 1l t', which are connected to arms j j, the lower ends of which are connected to a shaft J. The upper ends of the armsyj` are connected to rods 7.1 7V', which are secured to the outer end of the tympan G. On the upper part of the tympan there is a frisket K, secured to the outer end of a tympan by a rod Z, which has a spiral spring on around it. (Shown clearly in Fig. l.) On the rod lt-here is a pulley L, to which is attached a strap n, having abutton 0 at its end.

Mis a crotch or fork secured to a transverse brace p at one end of the frame A just below the ways e e.

N is a cylinder, the axis of which runs in proper bearings q q at the upper part of the frame A. At one end of the axis of the cylinder there is a toothed wheel O, which gears in a rack P at the side of the frame A.

Q is a lever, the upper end of which is at-l tached to the outer end of the rack I. The lower end of this lever is secured by a pivot to the lower part of the frame A. 4

R is a spiral spring attached to the lever Q and frame A.

S is a pin or rod attached to one of the arms 7' and projecting a short distance beyond the lever Q. l

The cylinder N is provided with a head r at each end, which are somewhat larger in diameter than the cylinder, and each head has a rectangular recess s cut in it, as shown in Fig. l'. v

In the outer end of the tympanr there are recesses t t, one at each side, in which a .nip per-bar T fits. (See Fig. l.)

U U are curved guides, which pass around a portion of the heads r r of the cylinder N, spaces being left between the. guides and heads, as shown in Fig. l.

V is an action-block or stationary cam secured to one of the guides U.

WV, Fig. l, is an ink-fountain secured atthe ends of levers u u, attached to the sides of the frame A. Onelever 'u is shown in Fig. 1. The ink-fountain has a roller o within it, which is in contact with a roller w above it, the roller w being in Contact with a large roller fr. The axis of the large roller has a band-wheel y upon it, around which bandwheel a belt ,c passes, said belt also passing around a pulley e at one end of the driving shaftX of the press. On the inner end of the tympan are small ink-rollers c o',

Y is an endless belt, which works around rollersin a frame e', attached to the frame of the ink-fountain IV by arms y. The endless belt has a series of forked arms w attached to it in an inclined or oblique manner, and rollers a are fitted within the forks and consequently have an oblique or inclined position. The rollers a bear against the large ink-roller a: and the small roller i0. (See Fig. l.)

A is an arm attached to the lower lever or arm b of the toggle D. The outer end of the arm A projects underneath the ink-fountain, as shown in Fig. l.

B is a pinion on the driving-shaft X. Said pinion gears into a toothed wheel C on the shaft F.

D is the feed-board, on which the imprinted sheets are piled.

E is the fly-board, upon which the printed sheets are piled as they are taken from the form.

At the lower ends of the guides U U, at one side of the frame A, there is a pawl t. (See Fig. l.) rlhe use of. this will be presently shown.

The sheets to be printed are placed upon the feed-board D, and motion being communicated to the driving-shaft X, the cam H and levers g 71., rods t', and arms j give a reciprocating motion to the tympan G, and the eccentric F and toggle D raise and lower the platen @,the platen being raised when the tympan is over it and depressed when the tympan is withdrawn from it. The ink-fountain W is raised by the arm A when the lower arm b of the toggle D is raised inward by the eccentric F, and the small ink-rollers o e on the tympan G come in contact with the large ink-roller and receive ink therefrom and distribute it over the forin when the tympan `is moved back, the form being placed upon the platen C. The endless belt Yhas motion communicated to it from the ink-rollers w x, against which the oblique rollers a on the belt press, the Obliquity of 4the rollers a producing the motion. The rollers a keep the ink evenly distributed upon the rollers 1U a; as they traverse over its surface. Upon the backward motion of the tympan G motion is given the cylinder N by means of the rack P and toothed wheel O, the pin or rod S acting against the lever Q. As the cylinder moves, the recesses s s in the heads r r of the cylinder catch the nipper-bar and draw it from recesses t t in the tympan and carry it around the cylinder N between the guides U U, and the heads and the nippers are opened by the pawl i and closed by the action-block or stationary cam V and catch the edge of a sheet of paper upon the feed-board D', and upon the return motion of the cylinder, this sheet is carried around and deposited upon the upper surface of the frisket K, which at that time is about passing underneath the cylinder, the nipper-block passing into the recesses t t in the tympan. Vhen the sheet is printed by the upward pressure of the platen C and the tympan has moved back a certain distance, so that the frisket is from underneath the cylinder N, the button 0 catches into the fork M, and the frisket is in consequence thrown over upon the fly-board E and 'the printed sheet deposited thereon. (See Fig. 2 and dotted lines in Fig. l.) When the button 0 catches in the fork M, the backward motion of the tympan causes the strap n to which the button is secured, and which also is attached to the pulley L on the rod Z, to turn the pulley and rod, and thereby throw over the frisket upon the fly-board, the 'frisket returning to its original position upon the forward motion of the tympan by the action of the spiral spring fm.

By the above invention a rapid feed motion is given the ordinary flat-bed or platen press, which is far superior to the cylinderpress, as much better work can be done thereby, especially Wood-cut printing and all fine work. The great obj ection attending the ordinary platen press is the slow feed motion attending it and the difficulty of devising some proper rapid feed motion. This obj ect I have effected by the above invention.

I do not claim, separately, the Dipper-bar with the nippers thereon, for they are old and well known. Neither do I claim any parts of the press irrespective of the means employed for producing the feed motion and the inking device. I

"What I claim as new, therefore, and desire to secure by Letters Patent, is-

l. Giving the necessary feed motion to the press by means of the reciprocating tympan G and frisket K, nipper-bar T, cylinder N, and guides U U, the above parts being constructed, arranged, and operating substantially as herein shown and described.

2. The employment or use of the endless belt Y, with oblique rollers a placed thereon `and arranged with the inkfountain IV, and rollers fn -w fr, as herein shown,for the purpose of equally distributing the ink upon the rollers ERVIN B. TRIPP.

YVitnesses:

S. H. WALEs, J. WV. HAMILToN. 

